Mounting for rock drills



Dec, 2, 19221. 1,517,312

G. M. 1v1-:1.1. MOUNTING FOR Rock DRILLS I N VEN TOR.

lllllllllllillll' IIIII ATTORNEY.

en, 2, G. M. NELL MOUNTING FOR ROCK DRILLS .med n n-.n 1a. x92: 2 suma-sneed I N VEN TOR.

'M ZIM BY fr] A TTORNE Y.

Palet cs2, 4192.4. l

ans'ravn M. NELL, crnnNvEn,'ooLonAno, Assrenon To 'rHEVDENvEn noci: 15mm.

MANUFACTURING COMPANY, or nnnvnn,

wenn.

" Application illed March 18, 1921.

To all fwhofmzt magico/wem.'

Be it vknown that I, GUs'rAvn citizen of the United States, residing at Denver, in the county of Denver, and State ofy Colorado, have inventedcertain new and useful' Improvements"` in Mountings for Fock "Drills, otfwhich the followingis a specification. 4 V l The present invention relates to means for '10 vmounting hand-directedfdrills and the like on a'mechanically adjusted support,.and is' more particularly'directed to improvements in supports for so-called hand sinke'rs so that they may be successfully 'utilizedffor l5 drifting.

One of the objects of the present invention is to provide a structure of-this character,r differently arranged by which-drills having handles may be mounted thereon.

Anotheroloject is to provide a simple and eective clamping or gripping means for securing the drill bit. ink place.

In the accompanying drawings r-f- Figurejlis ay plan view of one embodiment of the invention, U v

Figure 2 yis aside elevationof the same,

partlyin section showingr a 4drill in place, YFigure 3 is -a cross sectional view-.taken onthe line-33 of Figure`2, c

3o lFigure 4 is a side view of thefupperportion of one ofthe jaws, with the clamping Figure 5 is a similar view, with the bolt Figure 6 isia perspective viewof the portion of the jawshovvnin Figuresl iy and 5, liigure 7 is a perspective view of the poi'-, tion of the boltthat engages' said jaw,

Figure 8 is`A a plan view of the rear Aportion 4o of the mounting showing anvadapter in place thereon, f

Figure 9 is a longitudinal sectional view therethrough,

` Figure `10`is a perspective viewof the adapter. In the embodiment disclosed, the` usual guide shell is designated .11, and slidably mounted Ythereon is a carriage 1 2 that is ymoved through the' medium of ,a screw 13 extending longitudinallyin-the shell, and having a threaded'V engagement 14 with the carriage. The rear end of the screw isprovided with'the usual crank handle 15V.

f The .carriage M; NELL, a.

,the dini, any.

The 'head 28 of engaging the tie and said jaws canthus swing `outwardly to the ear 23, rthereby l26, and causing` the' jaws to yieldinqly grip.

COLORADO, A CORPORATION `OF DELA.-

MoUNrrNc son noon pimms.

Serial N 'o.` 453,294.4

end upstanding lugs 1 6, the upper portions of which, 17, are divergently curved to provideY seats for the body 18 v`of la hand sinker or'other drilling machine. Jaws 19 have bifurcated lower jaws have inwardly 22"V adapted to bear uponopposite portions of the upper side of standing ears 23 an 2,3, and in the ea'r 23a is slidably and rotatably mounted a-tie bolt 24 having a' nut 25 adjustably threaded' on its outer end. "A coiled spring 26 on the bolt is interposed between thenut 25 and the ear 23,- in `which said bolt isv slidably and ro-A tatably mounted. The ear 23 of the opposing jaw is shown in detailin Figures 4, 5 and and as there illustrated is provided with a transversely elongated opening 27. the tie bolt 24is correspondingly elongated and is thus adapted to pass. through theopening 27 when properly aligned therewith andwhen' turned at'r'ight angles the head will extend across the'openingandbear against the outer side of the ear, as illustrated Figure ,4. Thisposi-l formed on said ear.l

with this construction. it will be evident thatthe .jaws may be disconnected by disbolt 24 from the ear 23,

permit-J the placingo a drill upon the carriage. When so 4placed the jaws are swung` to the position illustrated inFigure .3, and

the head 2 8 of the bolt- 24 is passed through vthe opening 27. Itis then only necessary to turn tie nut 25 in the proper direction, forupon its rotation the 'bolt 24 will also be initially vturned untill the head' 28 strikes the abutments 2 9, and continued rotation of the nut causes it to be screwed toward compressing the spring upon the drill body, thereby effectively clamping it.' A reverse operationof the'nut serves` to disconnect .the jaws.

Thel rear end of the'carr1age12' is pro- 7vided with spaced upstanding abutment lugs v30ihaving recessed'seatsxl in their `front edges, said seats :being 'adapted to receive has contiguous to its front ends 20 that straddle .the lugs and are pivoted thereto, as illustrated at 21. 'These' extending projections the usual handle 34 on the rear end of the drill 22. Between the rear portions of the lugs 30, is located a transverse ear 35 in which is slidably mounted the shank 36 of a retaining hook 37 that is adapted to embrace the handle, as illustrated in Figure 2. The stem 3&6 of the hook 37 projects beyond .the ear 35 andl has threaded thereon a tension nut 38 that bears against a coiled 'spring 39 surrounding the shank and bearing against the rear end of the ear 35. Thus the rear end of the drill is detachably but effectively secured to the carriage.

are employed as it 'gives access to the mounting for said tubes at the rear. end of the drill body and permits their removal and replacement. Where water tubes are not used, it is the practice to place the handles in intersecting relation to the longitudinal center of the drill. that a drill havinga handle so placed will not be engaged by the handle retaining means shown in Figures 1 and 2. For such drills an adapter is employed that is illustrated more particularly in Figures 7, 8, 9 and 10. This adapter consists of aI body 40 having upstanding forwardly curved abutment llugs 41 adapted to receive the straight handle 42of the drill. This body is also provided with rearwardlyextending curved knobs 43 that. are received in the seats 31 of the abutments 30. The body 40 is furthermore provided with a central opening 44, through which the shank 45 of a handle-engaging hook 46 passes, the hook 46 cooperating with the lugs 41 tosnugly embrace and clamp the handle` 42. A nut 47, threaded on the rearwardly projecting end of the shank 45, bears against a coiled spring 48`that is abutted against the ear 35 of the carriage. It willl thus be c learthat the structure isA adapted to successfully maintain in place diilerent'drills having diierentlydisposed handles. 'f

From the foregoing, it'is thought that the construction, operation and many. advanl tages of the herein described'invention will ing be apparent to those'skilled in the art without further description, kand it will be understood that various changes in the size, .shape. proportion and minor details of construction may beresorted to without departfrom the spirit or sacrificing any of the.

advantages of the invention.

Having thus ully ydescribed my` invention, what I claim asnew, and desire to secure by Letters Patent, is

-1`. In a mountingfor rock drills, the com bination' with a drill holding carriage, of drill body embracing retaining jaws pivoted It will be obvious thereto, and means for drawing said jaws toward each other to grip a drill bodyy placed therebetween.

2. In a mountin vfor rock drills, the combination with a rill-holding carriage, of drill body embracing retaining jaws pivoted at their lower ends thereto, a bolt connecting the upper ends of the jaws, a nut adjustably threaded on the' bolt, and a spring interposed between the nut and one of the jaws.

3. In a mounting forrock drills, the combination with a drill holding drill body embracing retaining jaws pivoted at their lower ends thereto, a bolt slidably mounted in one of the jaws and adapted to ldetachably engage the other jaw, a n'ut carriage, of'

adjustably threaded on the bolt, and a v spring interposed between the nut andthe jaw in which the bolt is slidably mounted.

4. In amounting for rock drills, the combination Iwith a drill holding carriage, -of relatively movable drill bodyyclamping devices mounted thereon, a connectin `member slidable on one device and ada te to detachably interlock with the other evice, and means for .rotating the member to cause'it to interlock with said device. l

5. In a mounting-for rock drills, thecombination with a drill holding carriage, of relatively movable drill body clamping devices mounted thereon, a connecting member slidable on one device and adapted to detachably interlock with the other device,

an actuating element rotatable on the mem` ber, and means for causing` the element to effect a 4limited rotation of the member and secure a clamping action of the devices.

6. In a mounting for rock drills, the commits the passage of the head when the latter is in one position and prohibits its'passage when in a diierent position, and a nut adjustably mounted on the bolt for. eiecting its rotation and also its longitudinal movement.

8. In a mounting for rock drills, the combination with a drill holding carriage, of

relatively movable clamping jaws thereon, a bolt slidably and rotatably mounted onv one j aw and having an elongatedv head,` the other jaw having an elongated opening that perymalts the passage ofthe head when the lat is in one position and prohibits its passage when in a different position, stops on t e y latter jaw for limiting the rotation of the Y- against which the correspondin head, a nut adjustably threaded on the bolt, and a spring interposed between the nut and the jaw in which the bolt is slidably and rotatably mounted.

9. In a mountingl for rock drills, the combination with a drill holding carriage having a rear abutment for the handle of a drill of a handle-engaging retaining hook slidabl mounted on the carriage, a tension nutadjustable on the hook, and a spring interposed between'the nut and the carriage.

10. In amounting for rock drills2 the combination with a drill holding carnage, of a plurality of abutment members having similarly facing differently shaped seats `dlerently shaped rock drill han es'are respectively adapted to bear.

11. Ina mounting for rock drills, the combination with a drill holding carriage, of a plurality of abutment members having similarly facing differently shaped seats against which the correspondin sides of y diderently shapedrock drill han les are respectively adapted to bear, one of said members normally bearing against the seat of the other and being removable from such seat.

12. In a mounting for rook drills, the combination with a drill holding carriage having a support on which the bodies of rock drills are adapted to rest, of an abutment. against which the handles of certain drills. are adapted to bear, an adapter block ar. ranged to engage said abutment and having sides ofv an abutment against which the handles of other drills are adapted to bear, and means for securing the drills to the carriage.

13. In a mounting for rock drills2 the combination with a drill holding carrlage havmg a support on which the bodies of rook drills are adapted to rest, of an abutment against which the handles of certain drills are adapted to bear, a hook bolt holder in rear of the abutment, an adapter block ar-` ran ed to bear against' thev abutment and havin an abutment for the handle of a rock rill, and a handle-engaging hook bolt slldably mounted in the adapter and in the said holder.

14. In a mounting for rock drillsz the combination with a drill holding carnage having upstanding bearing lugs for en gement with a drill body, and 'clamping ws pivoted to said lugs.

15. In a mounting for rock drillsz the com-v binatin with a drill holding carriage .having upstanding bearing lugs provided with divergent seats on which a drill body is adapted to rest, `clamping jaws pivoted at their lower ends to the lugs and having overhanging portions adapted to bear upon such drill body', and means connecting the upper ends of the jaws for drawing them to-y wards each other. In testlmony whereof, I affix my signature in the presence lof two witnesses.

GUSTAVE M. NELL.

Witnesses:

A. R. STnUEnLn. H. K. DUvALL. 

